| abstract |
The invention relates to the technical field of repairing defects of rail transit structures, in particular to a negative pressure traction grouting treatment method for water leakage in subway station structures. It includes the following steps: Step 1: Arrange grouting holes and negative pressure holes: set grouting holes at the leakage position for grouting and plugging the leakage, and set up a number of negative pressure holes around the grouting holes; Step 2 Equipment installation : Connect the grouting port of the grouting equipment to the grouting hole opened, connect the negative pressure equipment to the negative pressure hole, step 3 start the negative pressure traction: start the negative pressure equipment to pump water to the negative pressure hole, when the pumped out When the leakage water contains impurities, start step 4; step 4 grouting: keep the negative pressure traction, start the grouting equipment; when the negative pressure hole starts to flow out the grouting liquid, reduce the traction power of the negative pressure equipment; then wait for the grouting liquid to stabilize When the negative pressure hole flows steadily, turn off the negative pressure traction; finally, continue grouting until the slurry overflows from the diseased part. |